| article html file updated | 14 February 2020 21:02 CET | Update | https://www.mdpi.com/2304-6775/8/1/2 |
| article html file updated | 23 December 2019 09:23 CET | Original file | N/A |
| article pdf uploaded. | 23 December 2019 09:22 CET | Version of Record | https://www.mdpi.com/2304-6775/8/1/2/pdf |
| article xml uploaded. | 23 December 2019 09:22 CET | Update | https://www.mdpi.com/2304-6775/8/1/2/xml |
| article xml file uploaded | 23 December 2019 09:22 CET | Original file | N/A |
